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Complete program listing

A complete listing of the program follows.

Listing 1 . Source code for FirstProgram.

/* Begin block comment This is the beginning of a block comment in Java.Everything in this block comment is for human consumption and will be ignored by the Java compiler.File: FirstProgram.java Copyright 2012, R.G. BaldwinThis program is designed to illustrate the most common forms of the three pillars of procedural programming inJava code: sequenceselection loopThe program also illustrates calling a method, passing a parameter to the method, and receiving a returnedvalue from the method. Assuming that the Java Development Kit (JDK) is properlyinstalled on your computer, do the following to compile and run this program.1. Copy this program into a file named FirstProgram.java and store the file in a folder on your disk.2. Open a command-line window in the folder containing the file.3. Type the following command to compile the program: javac FirstProgram.java4.4. Type the following command to run the program: java FirstProgramAny text that begins with // in the following program code is a comment. The compiler will ignore everythingfrom the // to the end of the line. The compiler also ignores blank lines.Note that this program was designed to illustrate the concepts while being as non-cryptic as possible.The program should display the following text on the screen except that the time will be different each timethat you run the program. value in = 5Odd time = 1353849164875 countA = 0countA = 1 countA = 2countB = 0 countB = 1countB = 2 value out = 10End block comment ***************************************/ //The actual program begins with the next line.import java.util.*; class FirstProgram{//The program consists of a sequence of statements.//The next statement is the beginning of the main // method, which is required in all Java applications.public static void main(String[] args){//Program execution begins here.//Declare and initialize a variable. int var = 5;//Statements of the following type display// information on the screen System.out.println("value in = " + var);//Call a method and pass a parameter to the method.//Save the returned value in var, replacing what // was previously stored there.//Control is passed to the method named firstMethod. var = firstMethod(var);//Control has returned from the method named // firstMethod.System.out.println("value out = " + var);//Program execution ends here }//end main method/****visual separator comment**************************/public static int firstMethod(int inData){//Control is now in this method.//Illustrate selection //Get the elapsed time in milliseconds since Jan 1970.long time = new Date().getTime();//Select even or odd time and display the results if(time % 2 == 0){System.out.println("Even time = " + time); }else{System.out.println("Odd time = " + time); }//end if-else selection//Illustrate a while loopint countA = 0; while(countA<3){ System.out.println("countA = " + countA);//Increment the counter countA = countA + 1;}//end while loop//Illustrate a for loop for(int countB = 0; countB<3; countB = countB + 1){ System.out.println("countB = " + countB);}//end for loop//Illustrate returning a value from a method and // returning control back to the calling method.return 2*inData; }//end firstMethod}//end class FirstProgram//The program ends with the previous line.

-end-

Questions & Answers

I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
How can I make nanorobot?
Lily
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Object-oriented programming (oop) with java. OpenStax CNX. Jun 29, 2016 Download for free at https://legacy.cnx.org/content/col11441/1.201
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